Grating for boats&#39; bottoms.



No. 637,080. Patented Nov. 14', I899. GAILLEAUD.

GRATING FOR BOATS BOTTOMS.

(Application filed Jan. 81, 1899.)

(No Model.)

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UNITED STATES PATENT OFFICE.

LEON OAILLEAUD, OF RO CHEFORT SUB MER, FRANCE.

GRATING FOR BC )ATS BOTTOMS.

SPECIFICATION forming part of Letters Patent No. 637,080, dated November 14, 1899.

Application filed January 31, 1899- Serial No. 704,018. (No model.)

To aZZ whom/it ntay concern.-

Be it known that I, LEON CAILLEAUD, a citizen of the French Republic,residing at Rochefort sur Mer, France, have invented certain new and useful Improvements in Gratings for Evacuating-Pit Boats; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

In non-capsizing boats provided with evacuatingpits it frequently happens that the heavy swells arising from strong winds cause the water to enter from belowinto these pits in large quantities to the inconvenience of the passengers.

The present invention has for its object to provide a protecting-grating for the purpose of remedying this defect.

In the annexed drawings I have illustrated this grating as applied to a non-capsizable and insubmergible boat, such as the so-called- Henry boat,wherein Figure 1 shows a plan view of the grating, and Fig. 2 a cross-section; but it must be understoodthat the improved grating may be applied with equal advantage to other boats employing an evacuating-pit.

In the example of the Henry boat the well is of an oblong form, a centerboard properly weighted being movable in this pit the whole length of the boat.

The device consists of a frame made of Wood or metal and comprising a series of cross-bars A, supporting other longitudinal bars B, notched and sunk into the former, so as to form a grating or covering C, which is arranged to lie upon the bottom of the boat. The center of the grating is situated directly over the well and is of slightly-larger area than the latter, and it is formed of four wooden or iron partitionsD D E E. The two parts D D are fixed and supported by the cross-bars. The two middle parts EE are movable and jointly connected to the former by means of hinges arranged lengthwise. They are clamped together, and the hinges are so arranged as to admit of opening upward when the centerboard is to be raised.

The free spaces between the bars are calcu- 5o lated in order that the evacuation of the water may be effected as quickly as if these bars did not exist-that is to say, there is suffiof Waterenter from beneath into the well,

they beat against the under surface of the four plain partitions, which are heavy enough or provided with stops or springs that prevent their lifting up under this action. The water spreads over here and there under the part formed by the longitudinal and cross bars, and its action being thus reduced the water returns again to the pit.

This arrangement of. grating can be applied to any kind of insubmergible boat having evacuating-pits of any form, and it can be either fixed rigidly to the bottom of the boat or simply laid thereon, so as to be easily lifted up.

Having now fully described my said invention, what I claim by Letters Patent is l. A grating for the purpose-set forth, comprising two parallel sections formed of a plurality of transverse bars A and a plurality of longitudinal bars B rigidly secured upon rods A; the partitions D, D secured upon said transverse bars,and the hinged partition E, E.

r 2. In a boat of the class described, having a well and a centerboard, the combination of a grating adapted and arranged to form the bottom of the boat and comprising two parallel sections, each formed of a series of transverse bars A and a series of longitudinal bars 0 secured upon said transverse bars at equidistant intervals; the partitions D, D

secured upon said transverse bars, and par- LEON CAILLEAUD.

Witnesses:

EMILE GRIMONT, JULEs PAULY. 

